https://www.xquartz.org/
XQuartz
https://www.macrumors.com/2012/02/17/apple-removes-x11-in-os-x-mountain-lion-shifts-support-to-open-source-xquartz/
Apple Removes X11 in OS X Mountain Lion, Shifts Support to Open Source XQuartz - MacRumors
As noticed by several users running the developer preview version of OS X 10.8 Mountain Lion, Apple is no longer including its X11 application for...
os x mountain lion
https://xquartz.macupdate.com/
Download XQuartz for Mac | MacUpdate
Download the latest version of XQuartz for Mac for free. Read 25 user reviews and compare with similar apps on MacUpdate.
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